Raw water pump install

75torino

Member
Sep 25, 2011
45
Brogue Pa
Boat Info
1989 340 Sport Fisherman 1982 270 Sea Ray Sundancer 330 TRS drive
Engines
Twin FWC 454 Mercruisers
hi I am trying to install a raw water pump on my 1987 Sea Ray with 7.4 lyrics engines closed water cooling. It only puts out about half of the water that the port engine does (I replaced that pump last year no issues) and squeals above 1500 rpm. My question is this would it still pump if I switched the hoses. Any other suggestions would be helpful. Thanks. Conard
 
Any idea why I am getting insufficient water. I am going to check for a blocked inlet
 
Any idea why I am getting insufficient water. I am going to check for a blocked inlet
Check for clogged sea strainer, blocked sea cock or the raw water hose from the strainer to the pump could be collapsing if it is old.
 
If you removed the impeller and the blades are gone then they are stuck in the cooling system someplace. Oil cooler, power steering cooler, or hoses. You need to find them! It will NOT pump if the hoses are on wrong
 

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